Which of the following tests is NOT typically performed in a hematology lab?

The test that is not typically performed in a hematology lab is the Oral Glucose Tolerance Test (OGTT). This test is primarily conducted in a clinical biochemistry or chemistry laboratory, as it is used to assess how well the body processes glucose and diagnose conditions like diabetes mellitus.

On the other hand, tests such as hemoglobin measurement, complete blood counts (CBC), and sickle cell tests are all standard procedures in a hematology lab. Hemoglobin testing is crucial for assessing the oxygen-carrying capacity of blood, a CBC provides important information about overall health and detects various disorders, and sickle cell testing helps identify sickle cell disease, which involves abnormalities in the blood. Thus, the inclusion of OGTT in the context of a hematology lab is incorrect, as its focus is on glucose metabolism rather than blood characteristics or disorders.